From 8325ef3d770b633573032f6e3211fe49b03f5cc9 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 7 Apr 2022 15:55:54 +0800 Subject: [PATCH] imx: imx8m: soc: runtime drop extcon property from usbotg node The extcon is an decrepted property and not used by upstream Linux and NXP 5.10 kernel, so we remove it before kicking linux in case it is in dts. Otherwise distro kernel will not able to have usb function. Reviewed-by: Ye Li Signed-off-by: Peng Fan --- arch/arm/mach-imx/imx8m/soc.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index 1f484e1cb2..d47638e8a9 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -1152,6 +1152,37 @@ static int disable_cpu_nodes(void *blob, u32 disabled_cores) return 0; } +#if defined(CONFIG_IMX8MM) +static int cleanup_nodes_for_efi(void *blob) +{ + static const char * const usbotg_path[] = { + "/soc@0/bus@32c00000/usb@32e40000", + "/soc@0/bus@32c00000/usb@32e50000" + }; + int nodeoff, i, rc; + + for (i = 0; i < ARRAY_SIZE(usbotg_path); i++) { + nodeoff = fdt_path_offset(blob, usbotg_path[i]); + if (nodeoff < 0) + continue; /* Not found, skip it */ + debug("Found %s node\n", usbotg_path[i]); + + rc = fdt_delprop(blob, nodeoff, "extcon"); + if (rc == -FDT_ERR_NOTFOUND) + continue; + if (rc) { + printf("Unable to update property %s:%s, err=%s\n", + usbotg_path[i], "extcon", fdt_strerror(rc)); + return rc; + } + + printf("Remove %s:%s\n", usbotg_path[i], "extcon"); + } + + return 0; +} +#endif + int ft_system_setup(void *blob, struct bd_info *bd) { #ifdef CONFIG_IMX8MQ @@ -1246,6 +1277,8 @@ usb_modify_speed: else if (is_imx8mms() || is_imx8mmsl()) disable_cpu_nodes(blob, 3); + cleanup_nodes_for_efi(blob); + #elif defined(CONFIG_IMX8MN) if (is_imx8mnl() || is_imx8mndl() || is_imx8mnsl()) disable_gpu_nodes(blob); -- 2.39.5